Week 21 Day 6: The Total World Stock Market in One Fund

VT holds approximately 60% U.S. stocks and 40% international (developed + emerging). It rebalances automatically as markets move. When the U.S. gets expensive and international gets cheap, VT naturally shifts toward international (through market cap changes and rebalancing). It is the ultimate set-and-forget equity holding.

VT versus VTI + VXUS: they achieve similar results, but VT does it in one fund. With VTI + VXUS, you choose the split (70/30, 60/40) and rebalance yourself. With VT, the split is dictated by global market caps. Current VT composition (2024): approximately 62% U.S., 27% developed international, 11% emerging markets. Top countries: U.S. (62%), Japan (5.5%), U.K. (3.5%), China (2.8%), France (2.5%). VT simplifies the international allocation debate entirely. Advantages of VT: (1) one fund, no rebalancing needed. (2) No home bias decisions. (3) Automatic rebalancing toward cheaper markets. Disadvantages: (1) You cannot control the U.S./international split. (2) Tax-loss harvesting is harder (need a pair fund like SPGM or ACWI). (3) Slightly higher expense ratio (0.07%) than VTI (0.03%). For the ultimate simple portfolio: VT (90%) + BND (10%). Two funds. Global diversification. Bonds for stability. Costs: approximately $60/year on a $100,000 portfolio. You could build and maintain this portfolio in 15 minutes and never touch it again.

The theoretical elegance of VT (or its index counterparts ACWI and FTSE All-World) rests on the Capital Asset Pricing Model's prescription that all investors should hold the global market portfolio. Under CAPM, the risk-return tradeoff is optimized at the global market-cap-weighted portfolio. Any deviation represents an active view -- including the common U.S. investor decision to overweight domestic stocks. The global market portfolio's expected Sharpe ratio should be at least as high as any individual country's Sharpe ratio because it diversifies away country-specific risk (Roll, 1977). In practice, the U.S. market has had a higher Sharpe ratio than the global portfolio over the last 15 years, but this is a consequence of the U.S. outperformance period, not a structural feature. Doeswijk, Lam, and Swinkels (2020) estimated the global investable market portfolio (including bonds, real estate, private equity, etc.) and found that public equities represent approximately 56%, bonds 38%, real estate 4%, and alternatives 2%. VT + BND approximates the public market portion of this theoretical optimal portfolio. For investors who do not want to make active country allocation bets (and the evidence suggests most should not), VT is as close to a theoretically optimal single equity holding as exists in a convenient, low-cost wrapper.